.html{
     font-size: 20px;
 }
*{margin: 0;padding: 0;}
body{
    background-color: #f5524b;
}
@media screen and (min-width:640px ) {
    body{background-color: white}
}
.head{
    width: 100%;
    background-color: #34394f;
}
@media screen and (min-width:640px ) {
    .head{width: 640px;margin: 0 auto}
}
.head_portrait{
    width: 80%;
    height: 3rem;
    padding-top: 1rem;
    margin: 0 auto;
}
.portrait_frame{
    width: 3rem;
    height: 3rem;
    line-height: 2rem;
    margin: 0 auto;
}
.portrait_radius{
    width: 2.5rem;
    height: 2.5rem;
    margin: 0 auto;
    -moz-border-radius: 50%;
    -webkit-border-radius: 50%;
    border-radius:50%;
    border: 0.05rem solid black;
    overflow: hidden;
}
.head_words{
    width: 6rem;
    margin: 0 auto;
    height: 1rem;
    line-height: 1rem;
    text-align: center;
}
.head_words a{
    text-decoration:none;
    font-size: 0.8rem;
    font-weight: 500;
    color: #ceced0;
}
.head_hr{
    width: 80%;
    height: 0.5rem;
    margin: 0 auto;
    border-bottom: 0.05rem solid #60667f;
}
.head_invita{
    height: 1.5rem;
    width: 10rem;
    margin: 0 auto;
    line-height: 1.5rem;
    text-align: center;
    font-size: 0.5rem;
    font-weight: 500;
    color: #ceced0;
}
.body_img{
    width: 100%;
    background-color: #34394f;
}
@media screen and (min-width:640px ) {
    .body_img{width: 640px;margin: 0 auto}
}
.body_img img{
    display: block;
    vertical-align: bottom;
    border: none;
}
.foot{
    position: relative;
    width: 100%;
    height: 15rem;
}
@media screen and (min-width:640px ) {
    .foot{width: 640px;background-color: #f5524b;margin: 0 auto}
}
.foot div{
    position: absolute;
}
.foot img{
    width: 100%;
}
.foot_code{
    z-index: 99;
    top: 2.5rem;
    width: 7.5rem;
    left: 4.25rem;
}
.foot_words{
    top: 12rem;
    width: 100%;
}
.foot_left{
    top: 2.1rem;
    left: 0.4rem;
    width: 5rem;
}
.foot_right{
    top: 3rem;
    right: 0;
    width: 5rem;
}